Deliverability of mailings via Unisender to Yahoo and iCloud servers?

Question

Yahoo

Good afternoon!
I ran into an interesting problem.
Several customers noticed that mailings from Unisender completely stopped reaching Yahoo and iCloud Mail (mac.com, me.com, icloud.com)
Unisender support did not clearly answer, offered to write to Yahoo and iCloud Mail or buy a dedicated IP, while guarantees that after the purchase the situation will change, they cannot give.
Quoting support
As I wrote to you earlier, yahoo and icloud are for personal correspondence and their spam filters have strict rules regarding the acceptance of letters from mass mailing services. If possible, you should avoid sending to these mail services.
But I still have at least ten services from which my clients make mailings, and nowhere else does this problem exist. Moreover, this also appeared on the Unisender 3-4 months ago, before that it was normal.

Questions:
1. If you do mailing, how are you delivering on Yahoo and iCloud Mail? What service are you sending from?
2. If you suddenly tried to write off with the Yahoo Postmaster and iCloud Postmaster services, were there cases that they manually corrected the situation on the domain?

Answer 1

It is necessary to check the correctness of txt in dns, spf
, DMARC tester.com/

Answer 2

Moreover, this also appeared on the Unisender 3-4 months ago, before that it was normal.

but in / in Ukraine, torrents are not prohibited (well, almost, the Americans still come and say)
, I believe that you are more literate in mailing lists than me, if you do them every day,
and, also, you probably know about services that help to send mailings to ready-made (and not collected with a daw to unsubscribe, etc.) base, they are more expensive than usual, they balance on the verge of spam and, frankly speaking, they are spam, reassure just formally they do mailings to the target - haha ​​- audience
now take the Ukrainian (and Russian, but still Urtelecom IPs for spam - a byword, I don’t think that the unisender has them, or only them, but ...) familiarity, add a second homeland - Cyprus, multiply by gray adalto- casino business located there, and suppose that at some point some manager didn’t check something or just by acquaintance allowed such a non-spam service to send out through their delivery ...
and in Yaha there is such a John, with a cigar, and someone asks him about some domain .. he asks to unblock ...
and John remembers on reddit (I'm not kidding - I quote - "Russian cheaters from Kiev" - "Kiev is not Russia, this is Ukraine, don't confuse" - "ok, don't rush, but the same shit") and ... John can only wince in disgust ...
in short - that I washed it, that it also concerns billing (more refusals on the cards of Western banks on such Cypriot-Moldovan-Ukrainian-Russian bills) - in pursuit of earnings, our compatriots like to walk along the edge like that, so it worked for you in the order of things ..
What to advise ? well, for complacency, you can blacklist the sender's IP - 100% in some it will be found, or a grid,
but for the profession - to separate, alas, but this is the only effective way

Answer 3

0. Accept and wait (with time, the blocking may fall off)
1. It is pointless to write letters because it is not you who sends out, but Unisender
2. If you yourself sent out from your own mail server, then you can and should write, and if the mailing is not spam, then the block is most likely they will remove it - but your own mailing list server is difficult (the postmaster profession has died) and if the mailing is spam, then such a request to manually consider the issue will lead to a permanent block without the right to appeal :)