Mementomori ry

mementomori.social is 4 years old today! 🎂 :party_skull:
On 5 November 2022, we started as a small server for @npub1zdf…6u9l and his wife @npub1vfx…slx9, who wanted to distance themselves from Musk's X and Zuck's Meta by self-hosting their own calm, safe and tech-friendly corner of the Fediverse. Four years later, we're home to over 1000 people, companies, associations, authors, bands, bots and everything in between.
The most refreshing thing is seeing an influx of Catalan gardeners here, alongside businesses like a small farm in Airaksela that produces honey, eggs, wool, handmade beeswax candles and goat's milk-honey soap (shout out to @npub1209…2qcx). The point is, we're not just Finnish nerds, we come in all shapes and sizes.
The year 2026 was a big year for us. We founded Mementomori ry, a non-profit association that now owns and runs the instance, so it no longer depends on one person. We have 50 members, 3 admins and 1 backup guy. Membership fees cover all our costs, and thanks to our sponsor @npub1f5w…2jep, our servers run on super fast European hardware in Helsinki indefinitely.
We also made our server cluster portable with open source ansible playbooks, so we're not tied to a single infrastructure and can move elsewhere at any time (not that we will any time soon!). We also have backups in several forms, so we can safely say we're covered in terms of continuity.
Thank you for posting, replying, boosting, reporting and keeping this place warm and welcoming. Here's to many more years, for as long as we mortals draw breath.
#MementomoriSocial #MementomoriRy #Fediverse #Mastodon #MastoAdmin
https://media.mementomori.social/media_attachments/files/117/564/811/032/438/740/original/e6d2fd71fde45f7e.png

2026-11-03 16:11:11 UTC

RE: https://mementomori.social/@rolle/117553378413177458
We'll have a brief blip shortly.
#MementomoriSocial
#note1q7h…9wxj

2026-10-29 15:42:46 UTC

mementomori.social now has over 1000 users! 🎉
When we started, we simply wanted a calm, safe, and tech-friendly space for experimentation, built for people who care about the Fediverse and want social media where users are in control. We began as a 2-person server, but today we have a diverse community from all walks of life, including regular people, companies, associations, authors, non profits, bands, tech startups, useful and fun bots, and political parties.
Thank you to each and every one of you for being here, posting, replying, and keeping this place warm and welcoming. A special thank you goes to our non-profit association members and our sponsor @npub1f5w…2jep who together keep the engine running.
Long live the instance, long live us! Memento mori 💀
#MementomoriSocial
https://media.mementomori.social/media_attachments/files/117/524/947/939/948/309/original/b4b43e7d8374dd90.jpg

2026-10-29 15:23:22 UTC

RE: https://mementomori.social/@rolle/117524877348795805
We're on the latest security patch! :party_skull:
#MementomoriSocial
#note1hc7…wzk9

2026-10-18 21:06:37 UTC

Mementomori.social now runs behind Cloudflare proxy 🌏
Some of our users far from Finland, especially in Australia and Asia, have had slower loading times. The reason is often a slower route between their internet provider and Europe. Now your connection goes first to a server near you, and Cloudflare carries it to our servers in Helsinki on its own fast network. Our servers and your data stay at UpCloud in Helsinki as before.
Everything should work as before, just faster for many of you. If you notice anything odd, like errors, login trouble, or posts or notifications not arriving, please let us know immediately at admins@mementomori.social.
#MementomoriSocial

2026-09-26 20:43:38 UTC

RE: https://mementomori.social/@ikkeT/117339038238666382
Optimization makes a difference!
#note1cdw…myya

2026-09-25 20:27:47 UTC

Our non-profit association for mortals now has 50 members! We are grateful to each and every one of you for joining and supporting our cause. Thank you for making this dream come true.
We wish a long life to our instance and to all the users on it. We hope you feel safe and at home here. Have a great weekend, everyone!
#MementomoriSocial #MementomoriRy
https://media.mementomori.social/media_attachments/files/117/333/559/185/518/959/original/6ad3a55cf303f7fe.jpg

2026-09-25 18:48:36 UTC

Mementomori ry is proudly sponsored by @npub1f5w…2jep 💜
UpCloud powers the servers our whole instance cluster runs on. Our data lives on sovereign European infrastructure, hosted by a European company, and it is seriously fast! ⚡️
Huge thanks to UpCloud for supporting independent, community-run social media. This is what a healthy fediverse needs.
https://upcloud.com
#UpCloud #Fediverse #Mastodon #DigitalSovereignty #EuropeanCloud #Servers #MementomoriRy #MementomoriSocial
https://media.mementomori.social/media_attachments/files/117/333/170/200/147/826/original/ea5979d42ec25bea.mp4

2026-09-25 17:04:24 UTC

We are live on @npub1f5w…2jep servers! :party_skull:
Tonight, we moved mementomori.social from Hetzner to UpCloud servers in Helsinki. We had scheduled a maintenance window from 17:00 to 20:00, but our instance was down for just under an hour - the last post on the old server went out at 18:30, and the first on the new server went out at 19:30.
Some numbers from the move:
- PostgreSQL upgraded from 14 to 18; database size is 210 GB with about 118.5 million posts, 1.27 million known accounts, and 21.7 million media attachments
- 440041 posts written by our own 990 users
- Search: 34.9 million public posts, 1.24 million accounts, and 4.28 million hashtags indexed
- Data checksums enabled, so silent disk corruption now shows up as an error instead of bad data
- Rebuilt 72 text indexes for the new operating system's collation rules, ensuring ä and ö sort correctly. This also freed up about 20 GB
- Now accessible over IPv6 as well!
Every server is now provisioned with Ansible, and the playbooks are public: https://github.com/mementomori-social/ansibles
If your home timeline looks empty, it will repopulate as you use it. Please let us know if anything seems off.
Huge thanks to @npub1zdf…6u9l and especially @npub17cz…c8xe for putting in countless hours. Thank you @npub1f5w…2jep for sponsoring our non-profit :bunhdheart: Media files remain hosted on Cloudflare R2 as before.
We should now be faster, better, more sustainable, and more sovereign than ever. Party on!
#MementomoriSocial #MementomoriRy #MastoAdmin

2026-09-19 13:12:56 UTC

Our initial schedule might have been a bit too optimistic due to our admins' busy schedules.
Current status: PostgreSQL (database) is replicating, and Elasticsearch has been completely moved.
Still in progress: migrating the main web server. The Ansible playbooks are mostly done, but they still need some tweaking and testing.
#MementomoriSocial #MementomoriRy #MastoAdmin
https://media.mementomori.social/media_attachments/files/117/297/870/728/317/558/original/0bd5e26918412599.png

2026-09-15 19:35:58 UTC

RE: https://mementomori.social/@rolle/117276728638987968
We at Mementomori.social are now running on Mastodon v4.8.0-alpha.3 :party_skull:
#MementomoriSocial
#note15sh…a9yj

2026-09-10 14:05:15 UTC

RE: https://mementomori.social/@ikkeT/117246523354081672
Migration work is processing nicely :party_skull:
#MementomoriSocial #MastoAdmin
#note1s60…kp6r

2026-09-08 17:53:18 UTC

RE: https://mementomori.social/@ikkeT/117236681822517624
We have the best admins 🫶
#mementoMoriSocial

2026-08-29 11:08:53 UTC

We are happy to announce that [@upcloud](https://glitchy.upcloud.world/@upcloud ) is now sponsoring our nonprofit and instance. Since we moved to an association and co-managed structure, we no longer run on @npub1zdf…6u9l's personal Hetzner account. We have started migrating to UpCloud's ultra-fast Helsinki servers with newer hardware. This will improve performance, speed, and future-proof our infrastructure.
Below you can see our preliminary migration plan. Most servers can be migrated in the background with no visible changes, but we will schedule extra maintenance windows for things that require attention and downtime. We will give you plenty of notice in advance so you can prepare. You can subscribe to status updates at https://status.mementomori.social
We will share more details about the sponsorship later. UpCloud is a European, sovereign cloud infrastructure provider that offers high-performance cloud servers on an hourly billing basis for Infrastructure-as-a-Service (IaaS) at https://upcloud.com
#MementomoriSocial #MementomoriRy
https://media.mementomori.social/media_attachments/files/117/178/445/691/521/126/original/eca69ab821577e7c.png

2026-08-27 18:44:34 UTC

On behalf of the board, thank you again for your incredible and heartwarming support. Our sustainability as a nonprofit and as a Mastodon instance is fully secured, with no burden on our admins or users.
Exciting and even bigger things are on the way - we will share the timeline and details at a later date. Here is a hint: thanks to our sponsors, we can optimize things even further. To be continued...
#Mementomoriry #Mementomorisocial
https://media.mementomori.social/media_attachments/files/117/168/925/929/456/753/original/40bb2321a0aec00a.png

2026-08-27 18:31:32 UTC

We have a chatroom on Matrix, which is an open source end-to-end encrypted messaging platform. It is federated like Mastodon, with different instances. We do not currently provide an open Matrix instance for others than admins (this might change in the future), but there are plenty of instances to choose from.
The room is invite-only for members, but we can send you an invite link.
Here is how to get in:
1. Create an account on an instance. Here are some options: https://matrix.org/ecosystem/hosting/ or for Finnish speakers: https://www.pikaviestin.fi/
2. Once you have a user account, update your Matrix ID in your profile here: https://members.mementomori.social/matrix
3. Let us know or wait for an invite.
Remember to install Element or Fluffychat on your phone so you have member discussions with you everywhere. See you there!
#Mastrix #Mementomoriry #Chat #ChatRoom

2026-08-21 20:20:28 UTC

Nonprofits exist for specific reasons. Usually, they exist to meet social needs and promote the common good, rather than generate financial profit for their owners.
Nonprofit organizations fulfill several important roles in society:
- Addressing market and government failures: The government provides services to the general public or the masses, but it is not always able to address the needs of small, specific groups.
- Market failures: Companies operate where it is possible to make a profit. Nonprofit organizations step in when those in need cannot afford to pay for services.
- Community and support: Helping the disadvantaged: Nonprofits provide food assistance, shelters, and crisis support.
- Peer support: These initiatives bring together people who have similar life experiences.
- Recreational activities: A large number of sports clubs and cultural associations operate on a nonprofit basis to make participating in these activities as affordable as possible.
These are all the very reasons why Mementomori ry exists. Those who have the means to become members can join, but the instance is here for everyone.
We promote open, European, natural, completely tracking-free social media where you own your data.
#mementoMoriSocial #mementomoriRy

2026-08-21 19:56:16 UTC

Happy to say that mementomori.social is now fully self-sufficient, with membership fees covering all our costs. Thank you for making a difference. Let's keep this the best instance we can possibly offer and keep things running for as long as we mortals draw breath.

2026-08-20 19:21:07 UTC

We reached a milestone of 40 members in our non-profit association today! A warm welcome to everyone!
Thank you so much, everyone, for the overwhelming support. We are truly in awe :meow_love: :blobcatmeltcry:

2026-08-20 07:19:00 UTC

All membership features are opt-in. You can find your consent settings on the member portal's front page and under your profile settings.
Please note: Public consent has been disabled by default for everyone from the start, but it wasn't visible during registration so those who want it enabled might have missed it. No action is needed, but if you'd like to have your name displayed here - https://members.mementomori.social/members - you can opt in by checking the box.
#MementomoriRy #Consent
https://media.mementomori.social/media_attachments/files/117/126/607/309/942/978/original/cebb78c19ef27222.png

2026-08-19 16:13:44 UTC

Brand book is live: https://members.mementomori.social/brand

2026-08-19 16:11:13 UTC

We're happy to say we're almost self-sufficient in a very short time. A warm welcome to new members, and thank you for the overwhelming support so far.
#MementomoriRy #MementomoriSocial
https://media.mementomori.social/media_attachments/files/117/123/041/869/367/897/original/95c00992287f0323.png

2026-08-18 14:43:03 UTC

Key users to follow:
@npub1zdf…6u9l - The server admin and chair
@npub17cz…c8xe - The second-in-command server admin and treasurer
@npub1vfx…slx9 - Our secretary
@npub15g7…jpc8 - The backup account for announcements in case the instance cannot be accessed, which should not happen if we can help it
Key resources:
Member portal:
https://members.mementomori.social
Status page:
https://status.mementomori.social
Documentation:
https://help.mementomori.social
Codebases:
https://github.com/mementomori-social
#MementomoriRy #MementomoriSocial

2026-08-18 12:33:19 UTC

As a non-profit organization we are committed to being as open and supportive as possible. This means that all the code we write and every technique we use are open source and publicly available. Everything related to our members and the way we run the organization and server is also out in the open.
We are not driven by profit. Our only purpose is to ensure the sustainability of our shared goals, such as keeping the instance up and running, rather than putting them in the hands of one person.
As an instance, we are very open-minded and liberal. We do not align ourselves with any political party. Instead, we base the way we operate on safe-space principles and decent human values. We support open bridges and protocols and we do not tolerate extremism or harm of any kind. Harassing people for not using alt text or for using AI is not acceptable to us. Hate increases hate, so we try to respond with kindness. Mementomori.social's number one rule is: Be kind. That principle also extends to our association.
That being said, in the interest of openness, we do use some GenAI-assisted coding. We refrain ourselves from usin GenAI for art, whether visual or musical, in case we ever need those things.
Our official rulebook states that we encourage and support the ethical social web. To us, this means building in public with open source and supporting an open, non-commercial, user-centered social media, the fediverse.

2026-08-18 12:03:16 UTC

Now that we have our animated gradient version of our logo, would you be interested in holographic stickers that have a similar effect when you show them off?

2026-08-18 07:48:47 UTC

Did you know you can pay your yearly membership fee monthly, which costs just €5 per month?
We are very close to our initial membership goal and pleasantly surprised by the overwhelming support. A warm thank you to everyone so far.
We are happy to say the association already has 34 members in just 3 days. We welcome you all just the way you are. :party_skull:
https://members.mementomori.social
#MementomoriRy
https://media.mementomori.social/media_attachments/files/117/115/407/243/340/226/original/fa31bad8bb961afc.mp4

2026-08-16 17:59:03 UTC

We now have 24 members, and we are happy about the launch so far 🐱 Our goal of making sign up as easy as possible was clearly a success. It takes only a couple of clicks to become a member. There is no bureaucracy, overly complicated manual processing, or paperwork from the board either.
We will continue posting about our nonprofit, and we still have some goals to reach before we are fully self-sufficient. But we will get there, slowly but surely. Perhaps even faster than expected.
Thank you for helping to make our instance sustainable.

2026-08-16 15:00:57 UTC

FAQ is open: https://members.mementomori.social/faq

2026-08-16 14:02:16 UTC

- reply

Hyvä kysymys. Saimme sivut auki vasta eilen, joten osa asioista on vielä tulossa tipottain... Tässä kaupparekisterin hyväksymät viralliset säännöt PDF-muodossa: https://members.mementomori.social/documents/mementomori-ry-saannot.pdf
Linkkaamme nämä asap myös eri yhteyksiin liitymisprosessissa.

2026-08-16 12:48:57 UTC

We are constantly improving our membership portal. If you have any feedback, please let us know.

2026-08-16 12:48:31 UTC

You can now pay the membership fee with Mobile Pay, Google Pay, or PayPal alongside existing payment methods like card, Link, and Apple Pay.
Jäsenmaksun voi nyt maksaa myös Mobile Payn, Google Payn tai PayPalin kautta nykyisten maksutapojen, kuten kortin, Linkin ja Apple Payn, lisäksi.

2026-08-16 09:02:46 UTC

- reply

Lyhyesti: Mementomori ry on uusi voittoa tavoittelematon yhdistys, joka on perustettu mementomori.social Mastodonia ja sen muiden palveluiden pyörittämistä varten (chat.mementomori.social chattipalvelu (Matrix), help.mementomori.social tukisivusto jne.). Hallituksessa istuu @npub1zdf…6u9l, @npub17cz…c8xe ja @npub1vfx…slx9. Jäseneksi voi liittyä jos haluaa tukea somepalvelua ja osallistua taloudellisesti kustannuksiin (5€/kk tai 60€/vuosi). Jäsen saa käyttöönsä jäsenportaalin, sometunnuksen ja pääsyn keskustelukanavalle. Jäsenyys ei ole pakollista, somepalvelun ja muidenkin palveluiden tarjoaminen jatkuu ilmaisena 👍

2026-08-15 18:41:14 UTC

The website is fresh out of the oven, and although we tested it throughout the evening, it might contain bugs or edge cases (you never know). Please let us know if you have trouble signing up, paying, or anything else - we will help! Send us a message or email at ry@mementomori.social.
Verkkosivusto on vasta valmistunut, ja vaikka testasimme sitä koko illan ajan, aina löytyy jotain pientä. Kerro siis meille, jos sinulla on ongelmia rekisteröitymisessä, maksamisessa tai missä tahansa muussa asiassa, autamme mielellämme! Saat apua lähettämällä meille viestiä täällä somessa tai sähköpostia osoitteeseen ry@mementomori.social.
#Mementomoriry

2026-08-15 18:32:06 UTC

Membership sign-up is open and we are already getting great questions from you (might be worth starting a FAQ soon):
Can I register with my social media pseudonym or do I have to use my real name?
You need your legal name. Section 11 of the Finnish Associations Act requires that the membership roster includes each member's full name and place of residence, which means you have to use your official name on the application. This information is only visible to the board and never appears on the public membership list.
There is a separate field for your social media name. On your personal page, you can set a display name, and that is the name that will show to other members if you choose to be listed publicly in the membership roster. If you leave it blank, the name you used when applying for membership will be used instead.
#Mementomoriry

2026-08-15 18:25:41 UTC

- reply

Nyt se on auki: Voittoa tavoittelemattoman rekisteröidyn yhdistyksen Mementomori ry:n jäseneksi voi nyt liittyä verkkosivuillamme: https://members.mementomori.social/fi
Yhdistyksemme ylläpitää ja rahoittaa avoimen lähdekoodin palveluita kuten mementomori.socialia. Jäsenmaksut kattavat palvelinkulut, eikä palvelun käyttö maksa kenellekään mitään: jäsenyys on tapa pitää tämä alusta järkevästi pystyssä ja taloudellisesti mahdollisimman riippumattomana.
Jäsenvaihtoehdot:
- Varsinainen jäsen 5 €/kk tai 60 €/v. Äänioikeus yhdistyksen kokouksessa.
- Kannatusjäsen 50 €/kk tai 600 €/v. Yhteisöille ja kaikille, jotka haluavat tukea enemmän.
Organisaatiosi voi myös lähteä mukaan sponsoroimaan yhdistystämme.
Liittymismaksua ei ole. Maksat kortilla tai tilisiirrolla, ja kirjaudut omalla mementomori.social-tililläsi.
Jäsensivusto on avointa lähdekoodia, kuten kaikki muukin: https://github.com/mementomori-social/members.mementomori.social
#Mementomoriry #MementomoriSocial #SomeFi #Some

2026-08-15 18:23:02 UTC

Mementomori ry Member portal and sign up is now open for members. JOIN AS MEMBER here: https://members.mementomori.social
The association runs and funds mementomori.social. Membership fees cover the server costs, and using the service stays free for everyone: membership is how this place stays up and independent.
Memberships:
- 5 €/month or 60 €/year, with a vote at the association meeting.
- Patron 50 €/month or 600 €/year, for organisations and anyone who wants to contribute more.
No joining fee. Pay by card or bank transfer, sign in with your mementomori.social account.
#Mementomoriry #Mastodon #NonProfit #Association #Associations #Mementomorisocial
https://media.mementomori.social/media_attachments/files/117/100/913/408/880/340/original/ad5d834013128cf3.png

2026-08-02 15:33:38 UTC

Mementomori ry and mementomori.social follow the safer space principles. Our upcoming member site makes this very clear. We are a safe space. We are individuals and you are loved as you are 🏳️‍🌈 🏳️‍⚧️
#MementoMoriRy #MementomoriSocial
https://media.mementomori.social/media_attachments/files/117/026/631/588/623/019/original/a424df514233cd0d.png

2026-08-02 12:47:38 UTC

The membership website is progressing nicely. You should be able to sign up as a Mementomori association member or patron soon enough.
#MementomoriRy

2026-07-26 19:18:01 UTC

- reply

Already decided: you can pay for your membership either monthly (5 €) or annually (60 €).
The current benefits include access to mementomori.social, our Matrix server at chat.mementomori.social, member chats, meeting attendance, and ongoing support from our services. Nothing extra yet - we are just getting started.
The main idea is to get support from members to cover our costs. Maybe we will offer more benefits down the road through member contributions, but we are still new to this.
#MementomoriRy

2026-07-26 18:55:59 UTC

- reply

Our costs are roughly 200 euros per month for a performance optimized, future-proof cluster, and we currently have about 1000 users. Since membership is optional, we do not expect even 10% to join as association members. If we get 40 members, we are covered. Of course, anything is subject to change and we can reconsider the membership fee later, especially if we get more members. Right now we have 3 members, which is us, the board (membership website in progress). @npub185q…wagx
#MementomoriRy #MementomoriSocial

2026-07-26 18:40:31 UTC

- reply

Yes, according to voting procedures, the members will decide. The point, of course, is to cover server costs for this to make any sense. Although we will get sponsorships and plans to cover costs in case members cannot.

2026-07-23 12:25:44 UTC

We have updated our Terms of Service:
https://mementomori.social/terms-of-service
Notable changes include the adoption of Finnish law and details about the new ownership association.
#MementomoriSocial

2026-07-21 13:56:18 UTC

Association Update: A board decision was made today regarding membership fees; the minimum is 5 euros per month (approximately 5.70 USD). Membership is not mandatory; mementomori.social will continue to be a free, public-interest service for everyone.
The members-only website and the membership sign-up process are currently being developed and will be available soon at https://members.mementomori.social
#MementomoriRy #MementomoriSocial

2026-07-10 19:15:11 UTC

RE: https://mementomori.social/@rolle/116878500070054627
Hello, fediverse! :skull360:
We are Mementomori ry, the registered non-profit association that now runs and funds mementomori.social.
The instance is no longer backed by an individual, instead it is kept independent by its members, so the community owns its future.
Day to day nothing changes for you. Behind the scenes it now stands on solid, transparent footing.
More soon on our website.
#MementomoriRy
#note1lvj…umy7