Feder and Twilio SendGrid: keep Twilio SendGrid, check its numbers.
No, Feder is not a replacement for Twilio SendGrid. Keep Twilio SendGrid. Feder sits beside it and checks whether the numbers it shows can be trusted, by reading what happened at the source and comparing it with your own history.
Why would I need this?
Because the question is not what the number is. It is whether you can trust it.
Is Feder an alternative to Twilio SendGrid?
No. Twilio SendGrid is an email API that lets businesses create, send and manage email at scale. Feder does a different job: it watches the numbers your tools record and says when one cannot be trusted. Nothing here asks you to switch.
Do I need Feder if I have Twilio SendGrid?
They do different jobs, so one does not stand in for the other. Keep Twilio SendGrid for the job it does. Feder's job is to say when a number your tools record has gone quiet or moved outside your own history.
What does Twilio SendGrid do better?
SendGrid gathers all of an account's email statistics in one place, so a business can see the big picture at a glance.
In Twilio's words:
All of your statistics, aggregated in one place so you can see the high level view of everything.
Statistics Overview | SendGrid Docs | Twilio, read 2026-11-12.SendGrid's delivered count includes the emails it was able to confirm reached a recipient.
In Twilio's words:
The number of emails SendGrid was able to confirm were actually delivered to a recipient.
Statistics Overview | SendGrid Docs | Twilio, read 2026-11-12.
What can go wrong with Twilio SendGrid's numbers?
SendGrid explains that opens are counted through a small image that some email apps do not load, so a real open can go uncounted.
In Twilio's words:
This means recipients might have received a message and opened it, but never be counted as having opened it.
Opens & Unique Opens | SendGrid Docs | Twilio, read 2026-11-12.SendGrid shows its statistics in the time zone set on the account, so a day's totals can differ from a tool that uses another time zone.
In Twilio's words:
The timezone for statistics pages is set in your account settings.
Statistics Overview | SendGrid Docs | Twilio, read 2026-11-12.
How does Feder work with Twilio SendGrid?
- Feder reads new contacts and emails delivered from SendGrid. New contacts feed the Interest signal and emails delivered feed Reach.
- A day SendGrid did not report shows as Not read. It is never shown as zero.
- Feder only reads. It never changes anything in SendGrid.
What should I ask about my Twilio SendGrid setup?
- Which numbers on my dashboard are counted at the source, and which are modeled or estimated?
- If this number stopped counting tomorrow, who would notice, and when?
- What does a normal week look like for this number, in my own history?
Questions owners ask
- Does Feder replace Twilio SendGrid?
- No. Keep Twilio SendGrid. Feder sits beside it.
- Does Feder send data into Twilio SendGrid?
- No. Feder only reads.
- How accurate is Feder?
- We do not publish an accuracy number yet. When there is a measured one, it will be here with how it was measured.
Where do these claims come from?
Every quoted statement about Twilio SendGrid on this page comes from Twilio's own pages, quoted above with the date we read them. We read them again by 2027-05-11. If one changes, this page changes or comes down.